blob: 616d43b83d09f4a25d539c587b71fee1a2be0ac0 [file] [log] [blame]
Georg Brandlab6f2f62009-03-31 04:16:10 +00001+++++++++++
2Python News
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00003+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Benjamin Petersond1735892009-03-07 18:46:21 +00007What's New in Python 3.1 alpha 2?
8=================================
9
10*Release date: XXX*
11
12Core and Builtins
13-----------------
Eric Smith1e1d7d22009-04-03 22:25:33 +000014- Implement PEP 378, Format Specifier for Thousands Separator, for
15 integers.
Benjamin Petersond1735892009-03-07 18:46:21 +000016
Benjamin Peterson8f76b492009-04-03 22:22:42 +000017- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
18
Benjamin Peterson7fe98532009-04-02 00:33:55 +000019- Issue #5499: The 'c' code for argument parsing functions now only accepts a
20 byte, and the 'C' code only accepts a unicode character.
21
Brett Cannon0759dd62009-04-01 18:13:07 +000022- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
23
Georg Brandlab6f2f62009-03-31 04:16:10 +000024- Fix a segfault when running test_exceptions with coverage, caused by
25 insufficient checks in accessors of Exception.__context__.
26
Guido van Rossum0ad59d42009-03-30 22:01:35 +000027- Issue #5604: non-ASCII characters in module name passed to
28 imp.find_module() were converted to UTF-8 while the path is
29 converted to the default filesystem encoding, causing nonsense.
30
Benjamin Peterson09832742009-03-26 17:15:46 +000031- Issue #5126: str.isprintable() returned False for space characters.
32
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +000033- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
34 the end sys.path, for compatibility with the system install of Python.
35
Antoine Pitrou3a652b12009-03-23 18:52:06 +000036- Issue #4688: Add a heuristic so that tuples and dicts containing only
37 untrackable objects are not tracked by the garbage collector. This can
38 reduce the size of collections and therefore the garbage collection overhead
39 on long-running programs, depending on their particular use of datatypes.
40
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000041- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
42 improve its performance. Long divisions and remainder operations
43 are now between 50% and 150% faster.
44
Mark Dickinsonbd792642009-03-18 20:06:12 +000045- Issue #4258: Make it possible to use base 2**30 instead of base
46 2**15 for the internal representation of integers, for performance
47 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
48 --enable-big-digits option to configure, which overrides the
49 default. Add sys.int_info structseq to provide information about
50 the internal format.
51
Mark Dickinson081dfee2009-03-18 14:47:41 +000052- Issue #4474: PyUnicode_FromWideChar now converts characters outside
53 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
54 and sizeof(Py_UNICODE) == 2.
55
Eric Smith8ec90442009-03-14 12:29:34 +000056- Issue #5237: Allow auto-numbered fields in str.format(). For
57 example: '{} {}'.format(1, 2) == '1 2'.
58
Antoine Pitrou652e7072009-03-13 19:25:20 +000059- Issue #5392: when a very low recursion limit was set, the interpreter would
60 abort with a fatal error after the recursion limit was hit twice.
61
Matthias Klose042f1332009-04-04 14:32:42 +000062- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
63 short file names.
64
Benjamin Petersond1735892009-03-07 18:46:21 +000065Library
66-------
67
R. David Murray548ac412009-04-02 19:44:43 +000068- Issue 2625: added missing items() call to the for loop in
69 mailbox.MH.get_message().
70
Hye-Shik Chang944820b2009-04-02 10:33:16 +000071- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
72 error substitutions from non-strict codec error callbacks in
73 incrementalencoder and StreamWriter.
74
Georg Brandl33c28812009-04-01 23:07:29 +000075- Issue #5656: Fix the coverage reporting when running the test suite with
76 the -T argument.
77
Raymond Hettinger3f10a952009-04-01 19:05:50 +000078- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
79
Georg Brandl4ed72ac2009-04-01 04:28:33 +000080- Issue #5624: Fix the _winreg module name still used in several modules.
81
Benjamin Petersona1b49012009-03-31 23:11:32 +000082- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
83
Jesse Nollera9314042009-03-31 22:36:44 +000084- Issue #5619: Multiprocessing children disobey the debug flag and causes
85 popups on windows buildbots. Patch applied to work around this issue.
86
Jesse Noller32d68c22009-03-31 18:48:42 +000087- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
88
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +000089- Issue #5387: Fixed mmap.move crash by integer overflow.
90
Jesse Nollerf8d00852009-03-31 03:25:07 +000091- Issue #5261: Patch multiprocessing's semaphore.c to support context
92 manager use: "with multiprocessing.Lock()" works now.
93
Brett Cannon7f6b4f82009-03-30 21:30:26 +000094- Issue #5236: Change time.strptime() to only take strings. Didn't work with
95 bytes already but the failure was non-obvious.
96
Jesse Noller7af4ef82009-03-30 16:47:15 +000097- Issue #5177: Multiprocessing's SocketListener class now uses
98 socket.SO_REUSEADDR on all connections so that the user no longer needs
99 to wait 120 seconds for the socket to expire.
100
Benjamin Peterson48e24782009-03-29 13:02:52 +0000101- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
102
Antoine Pitrou66994e12009-03-29 00:45:26 +0000103- Issue #1174606: Calling read() without arguments of an unbounded file
104 (typically /dev/zero under Unix) could crash the interpreter.
105
Benjamin Peterson59406a92009-03-26 17:10:29 +0000106- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
107 io.BufferedRandom have been deprecated for removal in Python 3.2.
108
Lars Gustäbel42e00912009-03-22 20:34:29 +0000109- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
110 forever on incomplete input. That caused tarfile.open() to hang when used
111 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
112 partial bzip2 compressed data.
113
Mark Dickinson79f52032009-03-17 23:12:51 +0000114- Issue #2110: Add support for thousands separator and 'n' type
115 specifier to Decimal.__format__
116
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000117- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
118 '>' alignment characters.
119
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000120- The error detection code in FileIO.close() could fail to reflect the `errno`
121 value, and report it as -1 instead.
122
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000123- Issue #5016: FileIO.seekable() could return False if the file position
124 was negative when truncated to a C int. Patch by Victor Stinner.
125
Mark Dickinsonae681df2009-03-21 10:26:31 +0000126Extension Modules
127-----------------
128
129- Issue #5463: In struct module, remove deprecated overflow wrapping
130 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000131 struct.error instead of returning b'\xff\xff\xff\xff'. The
132 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
133 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000134
Benjamin Petersond1735892009-03-07 18:46:21 +0000135
Benjamin Petersona58a6262009-03-07 16:34:40 +0000136What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000137================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000138
Benjamin Petersona58a6262009-03-07 16:34:40 +0000139*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000140
141Core and Builtins
142-----------------
143
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000144- The io module has been reimplemented in C for speed.
145
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000146- Give dict views an informative __repr__.
147
Eric Smith5e5c0db2009-02-20 14:25:03 +0000148- Issue #5247: Improve error message when unknown format codes are
149 used when using str.format() with str, int, and float arguments.
150
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000151- Issue #5249: time.strftime returned malformed string when format string
152 contained non ascii character on windows.
153
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000154- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
155 source has already been decoded into str.
156
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000157- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
158 rotating the object pointer by 4 bits to the right.
159
Mark Dickinson87ec0852009-02-09 17:15:59 +0000160- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
161 it now forces its argument to double before testing for infinity.
162
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000163- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
164 returns a non-number type.
165
Benjamin Peterson87618552009-02-08 15:00:52 +0000166- Issue #5182: Removed memoryview.__str__.
167
Mark Dickinsonc008a172009-02-01 13:59:22 +0000168- Issue #1717: Removed builtin cmp() function, dropped tp_compare
169 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000170 the type definition cmpfunc. The tp_compare slot has been renamed
171 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000172
Raymond Hettingere8364232009-02-02 22:55:09 +0000173- Issue 1242657: the __len__() and __length_hint__() calls in several tools
174 were suppressing all exceptions. These include list() and bytearray().
175
Mark Dickinson1124e712009-01-28 21:25:58 +0000176- Issue #4707: round(x, n) now returns an integer if x is an integer.
177 Previously it returned a float.
178
Antoine Pitroub52ec782009-01-25 16:34:23 +0000179- Issue #4753: By enabling a configure option named '--with-computed-gotos'
180 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
181 evaluation loop is compiled with a new dispatch mechanism which gives
182 speedups of up to 20%, depending on the system, on various benchmarks.
183
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000184- Issue #4874: Most builtin decoders now reject unicode input.
185
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000186- Issue #4842: Don't allow trailing 'L' when constructing an integer
187 from a string.
188
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000189- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
190
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000191- Issue #4838: When a module is deallocated, free the memory backing the
192 optional module state data.
193
Mark Dickinson8055afd2009-01-17 10:04:45 +0000194- Issue #4910: Rename nb_long slot to nb_reserved, and change its
195 type to (void *).
196
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000197- Issue #4935: The overflow checking code in the expandtabs() method common
198 to str, bytes and bytearray could be optimized away by the compiler, letting
199 the interpreter segfault instead of raising an error.
200
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000201- Issue #3720: Fix a crash when an iterator modifies its class and removes its
202 __next__ method.
203
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000204- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
205 function no longer attempt to call the __long__ slot to convert an object
206 to an integer. Only the __int__ and __trunc__ slots are examined.
207
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000208- Issue #4893: Use NT threading on CE.
209
Martin v. Löwisec59d042009-01-12 07:59:10 +0000210- Issue #4915: Port sysmodule to Windows CE.
211
Antoine Pitrouab868312009-01-10 15:40:25 +0000212- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
213 common cases are optimized thanks to a dedicated fast path and a moderate
214 amount of loop unrolling.
215
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000216- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
217 collecting the oldest generation) so that allocating lots of objects without
218 destroying them does not show quadratic performance. Based on a proposal by
219 Martin von Löwis at
220 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
221
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000222- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000223 having been closed (for instance, a read() call could return some
224 previously buffered data). Patch by Dmitry Vasiliev.
225
Antoine Pitrou05608432009-01-09 18:53:14 +0000226- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
227 flag to work properly. Furthermore, when specifying -u, the text stdout
228 and stderr streams have line-by-line buffering enabled (the default being
229 to buffer arbitrary chunks of data).
230
Raymond Hettinger35631532009-01-09 03:58:09 +0000231- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
232 instead of ints (reducing its size from 4 to 8 times thereby reducing
233 Python's overall memory).
234
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000235- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
236 an existing .py counterpart, override the co_filename attributes of all
237 code objects if the original filename is obsolete (which can happen if the
238 file has been renamed, moved, or if it is accessed through different paths).
239 Patch by Ziga Seilnacht and Jean-Paul Calderone.
240
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000241- Issue #4580: Fix slicing of memoryviews when the item size is greater than
242 one byte. Also fixes the meaning of len() so that it returns the number of
243 items, rather than the size in bytes.
244
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000245- Issue #4075: Use OutputDebugStringW in Py_FatalError.
246
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000247- Issue #4747: When the terminal does not use utf-8, executing a script with
248 non-ascii characters in its name could fail with a "SyntaxError: None" error.
249
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000250- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000251 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000252
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000253- Issue #3680: Reference cycles created through a dict, set or deque iterator
254 did not get collected.
255
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000256- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
257 where the tp_hash and tp_dict slots are both NULL.
258
Georg Brandlccc47b62008-12-28 11:44:14 +0000259- Issue #4759: None is now allowed as the first argument of
260 bytearray.translate(). It was always allowed for bytes.translate().
261
Skip Montanaro80072cb2008-12-23 03:51:14 +0000262- Added test case to ensure attempts to read from a file opened for writing
263 fail.
264
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000265- Issue #3106: Speedup some comparisons (str/str and int/int).
266
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000267- Issue #2183: Simplify and optimize bytecode for list, dict and set
268 comprehensions. Original patch for list comprehensions by Neal Norwitz.
269
Antoine Pitrou621601a2008-12-17 23:18:19 +0000270- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
271 print elapsed times, not only when some objects are uncollectable /
272 unreachable. Original patch by Neil Schemenauer.
273
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000274- Issue #3439: Add a bit_length method to int.
275
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000276- Issue #2173: When getting device encoding, check that return value of
277 nl_langinfo is not the empty string. This was causing silent build
278 failures on OS X.
279
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000280- Issue #4597: Fixed several opcodes that weren't always propagating
281 exceptions.
282
283- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000284 context manager returns a value that cannot be converted to a bool.
285
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000286- Issue #4445: Replace "sizeof(PyBytesObject)" with
287 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
288 bytes instances. On a typical machine this saves 3 bytes of memory
289 (on average) per allocation of a bytes instance.
290
Christian Heimesa872de52008-12-05 08:26:55 +0000291- Issue #4533: File read operation was dreadfully slow due to a slowly
292 growing read buffer. Fixed by using the same growth rate algorithm as
293 Python 2.x.
294
Antoine Pitrou5504e892008-12-06 21:27:53 +0000295- Issue #4509: Various issues surrounding resize of bytearray objects to
296 which there are buffer exports (e.g. memoryview instances).
297
Georg Brandlf9734072008-12-07 15:30:06 +0000298- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
299 method on file objects with closefd=False. The file descriptor is still
300 kept open but the file object behaves like a closed file. The ``FileIO``
301 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000302
Antoine Pitroubc420402008-12-07 20:14:49 +0000303- Issue #4569: Interpreter crash when mutating a memoryview with an item size
304 larger than 1.
305
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000306- Issue #4748: Lambda generators no longer return a value.
307
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000308- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
309
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000310Library
311-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000312
Brett Cannonf47e84c2009-04-01 16:06:01 +0000313- Issue #1665206 (partially): Move imports in cgitb to the top of the module
314 instead of performing them in functions. Helps prevent import deadlocking in
315 threads.
316
R. David Murraye59482e2009-04-01 03:42:00 +0000317- Issue #2522: locale.format now checks its first argument to ensure it has
318 been passed only one pattern, avoiding mysterious errors where it appeared
319 that it was failing to do localization.
320
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000321- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
322 Brandl.
323
Antoine Pitrou350370c2009-03-14 00:13:13 +0000324- Issue #1222: locale.format() bug when the thousands separator is a space
325 character.
326
Tarek Ziadé516db942009-03-11 12:52:00 +0000327- Issue #5472: Fixed distutils.test_util tear down. Original patch by
328 Tim Golden.
329
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000330- collections.deque() objects now have a read-only attribute called maxlen.
331
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000332- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
333 it is has been populated and properly configured in order to prevent
334 window flashing.
335
Guilherme Polo56f5be52009-03-07 01:54:57 +0000336- Issue #4792: Prevent a segfault in _tkinter by using the
337 guaranteed to be safe interp argument given to the PythonCmd in place of
338 the Tcl interpreter taken from a PythonCmd_ClientData.
339
340- Issue #5193: Guarantee that tkinter.Text.search returns a string.
341
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000342- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
343 Original patch by Akira Kitada.
344
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000345- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
346
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000347- Issue #5385: Fixed mmap crash after resize failure on windows.
348
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000349- Issue #5179: Fixed subprocess handle leak on failure on windows.
350
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000351- PEP 372: Added collections.OrderedDict().
352
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000353- The _asdict() for method for namedtuples now returns an OrderedDict().
354
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000355- configparser now defaults to using an ordered dictionary.
356
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000357- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
358 import guess_extension`` was used.
359
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000360- Issue #1733986: Fixed mmap crash in accessing elements of second map object
361 with same tagname but larger size than first map. (Windows)
362
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000363- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
364 overrun.
365
Tarek Ziadéf0721222009-02-28 10:16:43 +0000366- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
367 bdist_rpm command.
368
369- Issue #5378: added --quiet option to Distutils bdist_rpm command.
370
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000371- Issue #5052: make Distutils compatible with 2.3 again.
372
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000373- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
374 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000375
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000376- Issue #5287: Add exception handling around findCaller() call to help out
377 IronPython.
378
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000379- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
380 The file was resized to wrong size.
381
382- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
383
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000384- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000385 from the package_data and the data_files metadata.
386
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000387- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000388 support.TempdirManager, to avoid writing in the tests directory.
389
Tarek Ziadé68c50952009-02-13 23:04:17 +0000390- Issue #4524: distutils build_script command failed with --with-suffix=3.
391 Initial patch by Amaury Forgeot d'Arc.
392
Tarek Ziadé811d6242009-02-13 22:26:15 +0000393- Issue #2461: added tests for distutils.util
394
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000395- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
396 which inherited from numbers.py which did not have __slots__ defined. The
397 numbers hierarchy now has its own __slots__ declarations.
398
Antoine Pitroub353c122009-02-11 00:39:14 +0000399- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
400 encoding.
401
Thomas Heller465c8022009-02-10 18:59:04 +0000402- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
403 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
404
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000405- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
406 under NT and OS2. Patch by Philip Jenvey.
407
Brett Cannonbefb14f2009-02-10 02:10:16 +0000408- Issue #5128: Make compileall properly inspect bytecode to determine if needs
409 to be recreated. This avoids a timing hole thanks to the old reliance on the
410 ctime of the files involved.
411
Guilherme Polob681df42009-02-09 22:33:59 +0000412- Issue #5122: Synchronize tk load failure check to prevent a potential
413 deadlock.
414
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000415- Issue #1818: collections.namedtuple() now supports a keyword argument
416 'rename' which lets invalid fieldnames be automatically converted to
417 positional names in the form, _1, _2, ...
418
Guilherme Poloae098992009-02-09 16:44:24 +0000419- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
420
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000421- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
422 public documented method ``ZipImporter.get_filename()``.
423
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000424- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
425 the execution of packages by looking for and executing a ``__main__``
426 submodule when a package name is supplied. Initial patch by Andi
427 Vajda.
428
Guilherme Polo491aee22009-02-06 23:16:11 +0000429- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
430 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
431 Tkapp_Call when calling from a thread different than the one that created
432 the Tcl interpreter. Patch by Robert Hancock.
433
Eric Smith0e5b5622009-02-06 01:32:42 +0000434- Issue #4285: Change sys.version_info to be a named tuple. Patch by
435 Ross Light.
436
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000437- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000438 environment/Makefile. Patch by Douglas Greiman.
439
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000440- Issue #1276768: The verbose option was not used in the code of
441 distutils.file_util and distutils.dir_util.
442
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000443- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000444 --enabled-shared activated. Initial patch by Dave Peterson.
445
Guilherme Polo7f423952009-02-02 21:17:09 +0000446- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
447
Raymond Hettinger85602262009-02-03 04:19:10 +0000448- The shelve module now defaults to pickle protocol 3.
449
Brett Cannone61426e2009-01-30 01:31:34 +0000450- Fix a bug in the trace module where a bytes object from co_lnotab had its
451 items being passed through ord().
452
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000453- Issue #2047: shutil.move() could believe that its destination path was
454 inside its source path if it began with the same letters (e.g. "src" vs.
455 "src.new").
456
Guilherme Polo5f238482009-01-28 14:41:10 +0000457- Added the ttk module. See issue #2983: Ttk support for Tkinter.
458
Raymond Hettinger89e12962009-01-26 02:09:03 +0000459- Removed isSequenceType(), isMappingType, and isNumberType() from the
460 operator module; use the abstract base classes instead. Also removed
461 the repeat() function; use mul() instead.
462
Raymond Hettinger0f055172009-01-27 10:06:09 +0000463- Issue 5021: doctest.testfile() did not create __name__ and
464 collections.namedtuple() relied on __name__ being defined.
465
466- Backport importlib from Python 3.1. Only the import_module() function has
467 been backported to help facilitate transitions from 2.7 to 3.1.
468
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000469- Issue #1885: distutils. When running sdist with --formats=tar,gztar
470 the tar file was overriden by the gztar one.
471
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000472- Issue #4863: distutils.mwerkscompiler has been removed.
473
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000474- Added a new itertools functions: combinations_with_replacement()
475 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000476
Raymond Hettinger30729212009-02-12 06:28:27 +0000477- Issue 5032: added a step argument to itertools.count() and
478 allowed non-integer arguments.
479
Jesse Noller41faa542009-01-25 03:45:53 +0000480- Fix and properly document the multiprocessing module's logging
481 support, expose the internal levels and provide proper usage
482 examples.
483
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000484- Issue #1672332: fix unpickling of subnormal floats, which was
485 producing a ValueError on some platforms.
486
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000487- Issue #3881: Help Tcl to load even when started through the
488 unreadable local symlink to "Program Files" on Vista.
489
Martin v. Löwis59e47792009-01-24 14:10:07 +0000490- Issue #4710: Extract directories properly in the zipfile module;
491 allow adding directories to a zipfile.
492
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000493- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000494 --without-threads argument. When this occurs, _multiprocessing will
495 be disabled, and not compiled.
496
Antoine Pitrou08838b62009-01-21 00:55:13 +0000497- Issue #5008: When a file is opened in append mode with the new IO library,
498 do an explicit seek to the end of file (so that e.g. tell() returns the
499 file size rather than 0). This is consistent with the behaviour of the
500 traditional 2.x file object.
501
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000502- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
503 parameter was set.
504
Mark Dickinson8dd05142009-01-20 20:43:58 +0000505- Issue #4842: Always append a trailing 'L' when pickling longs using
506 pickle protocol 0. When reading, the 'L' is optional.
507
Brett Cannonafccd632009-01-20 02:21:27 +0000508- Add the importlib package.
509
Jesse Noller9a0fc972009-01-18 21:12:58 +0000510- Issue #4301: Patch the logging module to add processName support, remove
511 _check_logger_class from multiprocessing.
512
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000513- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000514 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000515
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000516- Issue #4959: inspect.formatargspec now works for keyword only arguments
517 without defaults.
518
Jesse Noller6214edd2009-01-19 16:23:53 +0000519- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
520 for *nix machines for negative handles and large int handles. Without this check
521 it is possible to segfault the interpreter.
522
Jesse Nollerb0516a62009-01-18 03:11:38 +0000523- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
524 in sharedctypes.py.
525
526- Issue #1225107: inspect.isclass() returned True for instances with a custom
527 __getattr__.
528
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000529- Issue #3826 and #4791: The socket module now closes the underlying socket
530 appropriately when it is being used via socket.makefile() objects
531 rather than delaying the close by waiting for garbage collection to do it.
532
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000533- Issue #1696199: Add collections.Counter() for rapid and convenient
534 counting.
535
Antoine Pitrou308705e2009-01-10 16:22:51 +0000536- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
537
Thomas Heller5e4e4272009-01-08 09:34:20 +0000538- Issue #4867: Fixed a crash in ctypes when passing a string to a
539 function without defining argtypes.
540
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000541- Issue #4272: Add an optional argument to the GzipFile constructor to override
542 the timestamp in the gzip stream. The default value remains the current time.
543 The information can be used by e.g. gunzip when decompressing. Patch by
544 Jacques Frechet.
545
Mark Dickinson315a20a2009-01-04 21:34:18 +0000546- Restore Python 2.3 compatibility for decimal.py.
547
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000548- Issue #3638: Remove functions from _tkinter module level that depend on
549 TkappObject to work with multiple threads.
550
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000551- Issue #4718: Adapt the wsgiref package so that it actually works with
552 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000553 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
554
Raymond Hettinger771ed762009-01-03 19:20:32 +0000555- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
556 to the decimal module.
557
Georg Brandl3a9b0622009-01-03 22:07:57 +0000558- Fractions.from_float() no longer loses precision for integers too big to
559 cast as floats.
560
Mark Dickinsonf9236412009-01-02 23:23:21 +0000561- Issue #4812: add missing underscore prefix to some internal-use-only
562 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
563
Georg Brandl3a9b0622009-01-03 22:07:57 +0000564- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
565 did unnecessary work in the common case where no key function was specified.
566
Georg Brandlb1441c72009-01-03 22:33:39 +0000567- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
568 the function is not a generator.
569
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000570- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
571 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000572
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000573- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000574 function. Original patch by Thomas Heller.
575
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000576- Issue #3767: Convert Tk object to string in tkColorChooser.
577
Martin v. Löwise354d782008-12-29 16:03:04 +0000578- Issue #3248: Allow placing ScrolledText in a PanedWindow.
579
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000580- Issue #4444: Allow assertRaises() to be used as a context handler, so that
581 the code under test can be written inline if more practical.
582
Georg Brandldb7b6b92009-01-01 15:53:14 +0000583- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
584 works as expected in the interactive environment.
585
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000586- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
587 Gabriel Genellina.
588
Antoine Pitrou180a3362008-12-14 16:36:46 +0000589- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
590 boundary.
591
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000592- Issue #4223: inspect.getsource() will now correctly display source code
593 for packages loaded via zipimport (or any other conformant PEP 302
594 loader). Original patch by Alexander Belopolsky.
595
596- Issue #4201: pdb can now access and display source code loaded via
597 zipimport (or any other conformant PEP 302 loader). Original patch by
598 Alexander Belopolsky.
599
600- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
601 302 conformant loader) will now work correctly in most cases (they
602 are still subject to the constraints that exist for all code running
603 from inside a module loaded via a PEP 302 loader and attempting to
604 perform IO operations based on __file__). Original patch by
605 Alexander Belopolsky.
606
607- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
608 allows backporting to maintenance branches. Original patch by
609 Alexander Belopolsky.
610
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000611- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
612 a non-ASCII letter.
613
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000614- Issue #4616: TarFile.utime(): Restore directory times on Windows.
615
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000616- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
617 codec cannot be found. This is for compatibility with the builtin behavior.
618
Facundo Batista708d5812008-12-11 04:20:07 +0000619- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
620 give correct results in the case where one argument is a quiet NaN
621 and the other is a finite number that requires rounding.
622
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000623- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
624 libs.
625
Georg Brandlf9734072008-12-07 15:30:06 +0000626- Added the subprocess.check_call_output() convenience function to get output
627 from a subprocess on success or raise an exception on error.
628
629- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
630 support unusual filenames (such as those containing semi-colons) in
631 Content-Disposition headers.
632
633- Issue #4384: Added logging integration with warnings module using
634 captureWarnings(). This change includes a NullHandler which does nothing;
635 it will be of use to library developers who want to avoid the "No handlers
636 could be found for logger XXX" message which can appear if the library user
637 doesn't configure logging.
638
639- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
640 exception.
641
Georg Brandleee31162008-12-07 15:15:22 +0000642- Issue #4529: fix the parser module's validation of try-except-finally
643 statements.
644
645- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
646 not a malformed option.
647
648- Added the subprocess.check_output() convenience function to get output
649 from a subprocess on success or raise an exception on error.
650
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000651- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
652 the corresponding tests now pass.
653
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000654- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
655 it was calling the wrong open() function.
656
Fred Drake9a0a65b2008-12-04 19:24:50 +0000657- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
658 support unusual filenames (such as those containing semi-colons) in
659 Content-Disposition headers.
660
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000661- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
662 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
663
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000664- Issue #5104: The socket module now raises OverflowError when 16-bit port and
665 protocol numbers are supplied outside the allowed 0-65536 range on bind()
666 and getservbyport().
667
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000668Tools/Demos
669-----------
670
Antoine Pitrou8a681222009-02-07 17:13:31 +0000671- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
672 and make it 2.6-compatible.
673
Guilherme Poloa7d27972009-01-28 16:06:51 +0000674- Ttk demos added in Demo/tkinter/ttk/
675
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000676- Issue #4677: add two list comprehension tests to pybench.
677
Georg Brandlb1441c72009-01-03 22:33:39 +0000678
679Build
680-----
681
Matthias Klose906785c2009-02-22 23:18:38 +0000682- Link the shared python library with $(MODLIBS).
683
Martin v. Löwis11f72102009-02-10 13:13:30 +0000684- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
685
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000686- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
687
Martin v. Löwise97637d2009-01-11 09:45:11 +0000688- Issue #4895: Use _strdup on Windows CE.
689
Georg Brandlb1441c72009-01-03 22:33:39 +0000690- Issue #4472: "configure --enable-shared" now works on OSX
691
692- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
693
694- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
695
696- Issue #4289: Remove Cancel button from AdvancedDlg.
697
698- Issue #1656675: Register a drop handler for .py* files on Windows.
699
700- Issue #4120: Exclude manifest from extension modules in VS2008.
701
702- Issue #4091: Install pythonxy.dll in system32 again.
703
704- Issue #4018: Disable "for me" installations on Vista.
705
706- Issue #3758: Add ``patchcheck`` build target to .PHONY.
707
708- Issue #4204: Fixed module build errors on FreeBSD 4.
709
710
711C-API
712-----
713
Mark Dickinson21776072009-02-10 16:13:25 +0000714- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
715 for negative arguments. Previously, it raised TypeError.
716
Georg Brandlb1441c72009-01-03 22:33:39 +0000717- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
718
719- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
720 the GIL is released, or owned by another thread.
721
722- Issue #4122: On Windows, fix a compilation error when using the
723 Py_UNICODE_ISSPACE macro in an extension module.
724
725
Mark Dickinsone675f082008-12-11 21:56:00 +0000726Extension Modules
727-----------------
728
Gregory P. Smith365a1862009-02-12 07:35:29 +0000729- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
730 supporting objects as input no matter how it was compiled (built in
731 implementations or external openssl library).
732
Mark Dickinson29500f62009-01-15 15:36:10 +0000733- Issue #4397: Fix occasional test_socket failure on OS X.
734
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000735- Issue #4279: Fix build of parsermodule under Cygwin.
736
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000737- Issue #4751: hashlib now releases the GIL when hashing large buffers
738 (with a hardwired threshold of 2048 bytes), allowing better parallelization
739 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
740
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000741- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
742
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000743- Issue #4738: Each zlib object now has a separate lock, allowing to compress
744 or decompress several streams at once on multi-CPU systems. Also, the GIL
745 is now released when computing the CRC of a large buffer. Patch by ebfe.
746
Georg Brandlb1441c72009-01-03 22:33:39 +0000747- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
748
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000749- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
750
Mark Dickinsone675f082008-12-11 21:56:00 +0000751- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
752 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000753
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000754- Issue #4583: array.array would not always prohibit resizing when a buffer
755 has been exported, resulting in an interpreter crash when accessing the
756 buffer.
757
Martin v. Löwis841edad2008-11-30 10:36:49 +0000758
Jack Diederiche0cbd692009-04-01 04:27:09 +0000759- Issue #5228: Make functools.partial objects can now be pickled.
760
Guilherme Polo9de29af2009-01-28 20:40:48 +0000761Tests
762-----
763
R. David Murraya21e4ca2009-03-31 23:16:50 +0000764- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
765 that should cause a test to be skipped are now done using import_module
766 from test support, which does the conversion.
767
Guilherme Polo9de29af2009-01-28 20:40:48 +0000768- Issue #5083: New 'gui' resource for regrtest.
769
770
Brett Cannon7317c1e2008-11-25 19:19:17 +0000771Docs
772----
773
Georg Brandl52b92cc2008-05-25 09:43:03 +0000774
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000775**(For information about older versions, consult the HISTORY file.)**